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Concept
Outside plant
Résumé
In telecommunication, the term outside plant has the following meanings:
In civilian telecommunications, outside plant refers to all of the physical cabling and supporting infrastructure (such as conduit, cabinets, tower or poles), and any associated hardware (such as repeaters) located between a demarcation point in a switching facility and a demarcation point in another switching center or customer premises.
In the United States, the DOD defines outside plant as the communications equipment located between a main distribution frame (MDF) and a user end instrument.
The CATV industry divides its fixed assets between head end or inside plant, and outside plant. The electrical power industry also uses the term outside plant to refer to electric power distribution systems.
Network connections between devices such as computers, printers, and phones require a physical infrastructure to carry and process signals. Typically, this infrastructure will consist of:
Cables from wall outlets and jacks run to a communications closets, sometimes referred to as station cable.
Cables connecting one communications closet to another, sometimes referred to as riser cable.
Racks containing telecommunications hardware, such as switches, routers, and repeaters.
Cables connecting one building to another.
Exterior communications cabinets containing hardware outside of buildings.
Radio transceivers used inside or outside buildings, such as wireless access points, and hardware associated with them, such as antennas and towers.
The portion of this infrastructure contained within a building is the inside plant, and the portion of this infrastructure connecting buildings or facilities is the outside plant. Where these two plants meet in a given structure is the demarcation point.
Outside plant cabling, whether copper or fiber, is generally installed as aerial cable between poles, in an underground conduit system, or by direct burial.
Source officielle
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